Convert CET to AST — Time Difference Between Central European Time and Atlantic Standard Time

How to Convert CET to AST

Drag the slider on the CET timeline to pick your time — the AST time updates instantly. You can also click the time display to type a specific hour or pick one from the 15-minute interval dropdown, and use the date picker to check a different day.

What Is the Time Difference Between CET and AST?

Atlantic Standard Time (AST) is 5 hours behind Central European Time (CET). To convert, subtract 5 hours — for example, 9:00 AM CET is 4:00 AM AST.

CET to AST Quick Reference

CET to AST Meeting Planner

Use the color-coded table above to find overlapping work hours between Copenhagen and San Juan. Amber rows mark daytime hours — pick a slot that falls in amber on both sides for a meeting that works for everyone.

Why Trust This CET to AST Converter?

Timezoney uses the IANA Time Zone Database — the same source that powers your phone and computer — so every conversion handles daylight saving transitions and half-hour offsets automatically.